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Production for Shahs of Sunset Season 3 kicked off on Saturday, May 4. In typical Shahs style, the event at which they filmed at was anything but understated.

To celebrate Lilly Ghalichi’s 30th birthday, everyone’s favorite Persian Barbie feted herself in a 350-person, prom-themed bash. And although all her cast mates were invited, Wetpaint Entertainment can exclusively reveal that at the last minute, Mercedes ‘MJ’ Javid failed to show.

The soiree was held at the Beverly Hills mansion of Mohamed Hadid of Real Housewives of Beverly Hills fame, who’s also a pal of the birthday girl. A guest tells us festivities began at 6:30 with an outdoor cocktail hour followed by a five-course, sit-down dinner for 120 of Lilly’s closest friends and family members.

By 9 pm, all the other guests had arrived and the Persian prom kicked off in the ballroom (due to the heat, the party later moved upstairs).

With the Bravo cameras rolling, all eyes were on the Shahs cast — who had the rest of the crowd whispering.

“I noticed two things right away,” the guest tells Wetpaint. “Asa and GG, who normally hate each other, were getting along. They sat at the same table talking and joking around.”

“The other thing was that MJ wasn’t there,” the guest continues. “I asked if she had been invited and was told everyone from the show was invited. People had been under the impression she was coming, so I guess it was a last minute issue.”

Other Bravo-lebrities who did make the scene? Real Housewives of Orange County’s Gretchen Rossi and Slade Smiley, along with The Voice’s Christina Milian.

And although the evening was extravagant in every way, the party didn’t go until the wee hours of the morning. “By 1 am, the party was over,” said the guest. “Lilly said she needed her beauty sleep."

All in all, a great night for Lilly…and what sounds like the beginning of some drama between MJ and the rest of the cast.  We can’t decide which we’re more excited about!